Pasteurizing apparatus.



s. L. GOLDMAN. PAsTEumzlNG APPARATUS.

APPLICATION FILED IAN. I3. i916.

.patented May 2,1916.

2 sHEETs-sHEET L Mmmm s. L. GOLDMAN.

PASTEURIZING APPARATUS. APPLICATION FILED JAN.13 1916. L1@ :IIN/13%Patented May 2, 191.6

2 SHEETS-SHEET 2.

WPA/@65.29%

\ :L :freir 'salaries Partnr orina SIGMUND L. GOLDMAN, OF CEIIICAGO,rILLINOIS, ASSIG-NOI-'t T0 BARRY-WEHMILLER MACHINERY COMPANY,'0F ST.LOUIS, MISSOURI, A CORPORATION 0F MISSOURI.

PASTEURIZING APPARATUS.

Specication of Letters Iatent.

Patented May 2, 1916..

Application led January 13, 1916. Serial No; 71,896.

MAN, a citizen of the United States, residing at Chicago, in the countyof Cook and State of Illinois, have invented a new and usefulImprovement in Pasteurizing Apparatus, of which the following is aspecitication.

My inventionrelates to an improvement in the type of pasteurizingapparatus in which the product (bottled or canned) to be pasteurized i'sconveyed through a succession of respectively attemperating,pasteurizing and cooling compartments.

rll`he primary objects of my invention are to provide an improved systemof circulating the liquid in the compartments, where-v by its differentappropriate temperatures therein may be regulated to a nicety to producethe maximum output of the apparatus in the minimum of space and time,and with the employment of a comparatively smallquantity of steam forheating the liquid; and to eect comparatively quick heating of theproduct to be pasteurized and rapid and positive cooling of the sameafter its pasteurization, to cause the product, and especially beer, toemerge from the apparatus at the right temperature for handling thebottles, and particularly for labeling them. y

In the accompanying drawings, Figure 1 shows the preferred constructionof my improved apparatus by a View in side elevation, diagrammatic incharacter; Fig. 2 is a broken view, on a scale enlarged overthatobserved in Fig. 1, showing in section one of the three similarthree-way valves in the feed and discharge pipe for the pasteurizingliquid; Fig. 3 is a broken view, also enlarged, showing in section apriming-head device, and Fig. 4v is a broken view showing the upper partof the lefthand endof the apparatus' as represented in Fig. 1, inelevation.

The tank 1 comprises a series of compartments, 2, 3 and 4, affording,respectively, the attemperating, the pasteurizing and the coolingcompartments. The compartments 2 and 3 are partially divided from eachother, as by intervening air-spaced partitions at 3a, above which thosetwo compartments are in open communication; and air-spaced partitions at3h, extending from the bottom of the tank beyond the normal vwater-level, at ya, separate the pasteurizing and coolingcompartmentsagainst intercn'culaing.communication except through a` valv dpipe-connection 3c bridging the alr-space 3b and provided as and for thepurpose hereinafter described. The compartments 2 and 4 are eachsubdivided, respectixely by air-spaced partitions at 2? and 4a dependingfrom the top short of the bottom of the tank to afford opencommunication between the members of each pair of sub-compartments or'legs below the partltions, and permit each legto hold a differenttemperature of the pasteurizing medium.

Thetank 1 is shown to be supported at its bottom in raised position. Forfilling the tank with water, and emptying it, a straight-line pipe 5 isprovided to extend lengthwise along the tank, near one end of which itcontains a shut-ofi' valve 6 and near the opposite end a similar valve7. A branch 5n containing a three-way valve 8 leads from the pipe 5through the lower part of the tank into' the compartment 4 near itslower left-hand corner; a branch 5b containing a three-way valve 9 leadssimilarly into the compartment 3 near its lower right-hand corner, and abranch 5c, containing a three-way valve 10, leads similarly into thecompartment 2 near its lower inner corner. These three-way valves areeach of the construction of that illustrated in Fig. 2.

A pipe 11 leads, outside the tank, from the upper part of the inner legof compartment 2 into a horizontal pipe 12 having two dependingbranches, 12a and 12b, leading into the lower part of the pasteurizingcompartment 3. The pipe 11 contains, in its vertical section, al'-coupling 13, within which extends a relatively narrow vertical andliaringly open-ended tubular head 14 on the end of'a pipe` 15, ofrelatively small diameter, containing a valve 15a and projecting intothe corpling 13, to carryl the `head therein, from a header 16 extendingalong and communicating at intervals with the lower outer-corner portionof the comv erence-numeral 127.

A valved fresh-water spray-pipe 21 discharges into the endsub-compartment of the compartment 4 through its top, adjacent to whichthat sub-compartment is provided with an overow 22, for maintaining theWater-level normally at w; though if that overflow should becomeclogged, causing a rise of the water-level to w1, the excess water willrun out through an overliow 23 provided in the upper part of the firstleg of compartment 2.

For conveying the product to be treated through the pasteurizer,parallel endless chains 24 pass about suitably disposed pairs ofsprockets, indicated at 25, 26, 27, 28 and 29, and at 30, the last-namedreference-nul mer'al indicating each of a plurality of relativelysmaller sprockets; and all sprockets are driven from the sprocket 28.The sprockets at both sides of the tank for the parallel-chain conveyer24 are preferably j ournaled on stub-shafts, except the sprockets 29,which are on the opposite-end portions of a shaft 29a supported in thetankwalls to extend through the lower part of the compartment 3. Holdersor baskets 31, of any desired kind, hung at intervals, as usual, on theconveye'r, for carrying the bottles, cans or other receptaclescontaining the product to be pasteurized, lto be conveyed through theapparatus, arepreferably provided with hinged lid-sections 32, to beraised for introducing and withdrawing the receptacles. Since theselid-sections are liable to be left open after raising them, and shouldbe closed while the holders are passing through the apparatus, I connectthe opposite standards 25, carrying the sprock- 'ets 25 at theadmission-end of the tank 1, by a rod 25b to extend into the path of thelids 32 when raised, to cause the latter to encounter the rod in passingit and be turned down and thus closed.

The inner leg of the compartment 2, and the compartment 3 and inner legof the compartment 4 are covered, as shown, to retain the heat in theseparts of the apparatus;

though the covers should be removable to4 permit access to the interiorof the tank for vrepair and emergency purposes. Thermometers, indicatedat 33, are provided on all compartments and sub-compartments.

For operating the apparatus, the tank 1I is first supplied with waterupon opening the valves 6, 8, 9 and 10, and the valve in pipe 3, thevalve 7 being closed. 4When the tank has ,been filled to the level a',which will be manifested at the overflow 22, the

valve 6 is closed, as is also the valve 10, while the valves 8 and 9remain open to permit circulation between ,the inner leg of compartment4 and the compartment 3, thereby to prevent the occurrence of coolstrata of the pasteurizing liquid in the adjacent lower corner-portionsduring the operation of the apparatus. Steam is then turned on at thepipe 17 to-course through the jet-pump 18, pipe 12 and its branches 12and 12b, and enter the compartment 3 for heating the water therein, andto a lesser extent than in the inner leg of compartment 2. While this isproceeding, the shut-off valve 15 in pipe 15 remains closed, but that inpipe 3 remains open to cause circulation between the i tank-sections itconnects to tend to equalize the temperature of the upper stratum of thewater in them, until that in compartment 3 has reached the pasteurizingtemperature (about 48 R.), when that valve is closed. The thermostatshuts of the steam-supply while that temperature continues, and acts toraise it wherever it falls below.

The steam, in its passage through the jetpump 18, exerts aninjector-action on the pipe 11 to draw water from the inner leg ofcompartment 2 and circulate it between compartment 3 and that leg forattemperating, by stirring, the water in the latter. When thepredetermined conditions of temperature have been thus attained, theconveyer is started. The holders 31 enter in succession the compartment2 at its top and pass through the series of compartments andsub-compartments in the tank. As a holder enters the tank, the volume ofwater it displaces passes through the pipe 3c, carrying heat with it towarm the up er portion of the water in the inner leg o compartment 4,which overflows at 22. In the meantime,

the heat of the water in compartment 3 slowlv attains the inner leg ofcompartment 2 andmeets therein the ascending holders 31 containing thecold receptacles. which attemperate the water in that leg by cooling it,so that gradual warming and 'preliminary heating of the contents of thereceptacles ensue. When the first product under treatment approaches thesprockets 27, the valve in pipe 3 is turned to close the latter; andthereupon the valve in the spray-pipe 21 is opened vto clean the holdersand their contents and admit cold hydrant-water, in proper quantity,into compartment 4, for regulating the temperature of the water in thelatter, which should, in the upper part, be about that of thesurrounding atmosphere. yA ll communication has now been cut off betweenthe compartments 3 and 4. except through the valves 8 and" 9, whichremain open` for continuing the circulation, to tend to equalize thetemperature in the adjacent lower parts of these compartlnents, besidespreventing cold spots, or

land priming-head 14 therein, to suck a certain amount of water from thelower outer corner-portion of compartment 2 through pipe 15 into thepipe 11 to mix therein with the water from the inner leg ot' thatcompartment and be heated by the steam being injected into the bottomot' compartment 3 through the branches 12n and 12". This action enhancesthe circulation and the mixing in the inner leg of compartment 2 and incompartment 3 of the pasteurizing medium; and it also avoids dead spots,or cold strata of the water'in the lower outer corner-portion ofcompartment 2, where they would otherwise occur and impair the operationof the apparatus. For this purpose the valve 15l is only slightlyopened. Opening it more or less fully causes more water to flow fromcompartment 2 and be heated for prolonging accordingly the pasteurizingoperation while maintaining the same speed of the conveyer. p

The amount of the water carried through the pipe 15 and priming-head maybe easily regulated through the medium of the valve 15a. Thepriming-head 14C creates an initial suction through the small pipe 15into the large pipe 11 and the use of such head is essential in View ofthe fact that the suction point in the attemperating compartment islower than the point at which `the pipe 15 delivers into the large pipe11, and by the use of such primer the necessity of a pump or additionalejector is obviated. A further advantage of the priming head is that thesame maintains a flow of water of equal velocity at all times when thevalve 15a is open. rll`he Water in the inner leg of compartment 2 isonly heated from the adjacent part of the tank 3, and is cooled by theincoming product in the travelingholders 31.. In this Way acomparatively large volume of the pasteurizing medium is continuouslymaintained at the pasteurizing temperature and under circulation withoutthe employment of any pumps,A such as are ordinarily used for thepurpose, but merely by a thermostat-controlled jet-device or injector,thereby saving about 50 per cent. in steam consumption and greatlyaugmenting (to the extent of about 30 per cent.) the capacity of theapparatus. v

When, toward the end of a run, the last holder 31 has been broughtbetween the sprockets 27, valve 8 is closed to keep the heat in thepasteurizing medium for the next days run, the steam is turned od', andvalve 21 should be closed about half-wayuntil the product has allemerged from the tank.V

lV ith the 'alve closed the tank may be emptied by opening all ot' theother valves in pipe ll realize that considerable variation is possiblein the details ot' construction thus specifically shown and described,and I do not intend b v illustrating a single, specific or preferredembodimentof my invention to be limited thereto; my intention heilig inthe. following claims to claim protection upon all the novelty there maybe in my invention as fully as the state of the art will permit.

"hat l claim as new and desire to secure by Letters latent isz- 1. Apasteurizing apparatus comprising a series of compartments includingattemperating and pasteurizing connmrtments` a simultaneously actingsingle-ejector and thermostat-actuated heating and circulating line forestablishing commun' lating between said attemperating and pasteurizingcompartments, and an auxiliary controllable line leading Jrom theattemperating compartment and connected with said first line andactuated and controlled b v the ejector and thermostat actuatingandcontrolling said first line` whereby to regulate the period ofpasteurization and the capacity of the apparatus.

2. A pasteurizing apparatus comprising a tankcontainingcommunicatingpipe connected attemperating pasteurizingcomlmrtments and a normally non-communicating cooling compartment, andequipped with an endless holder-carrying convever for carrying theproduct to be treated through said compartments, and athermostat-controlled steamjet connected and cope ating with saidintercommunicating pipe to withdraw the pasteurizing medium from theattemperating compartment and heat it in its comse to and deliver itdirectly into the pasteurizing compartment while maintainingpredetermined temperatures of said medium in both compartments.

3. A pasteurizing apparatus comprising a tank containing attemperatingand pasteurizing compartments and a cooling compartment, and equippedwith an endless holdercarrying conveyer for carrying the product to betreated through said compartments, a pipe of relatively large diameterconnecting the attemperating and pasteurizing compartments outside thetank. a thermostatcontrolled steam-jet connected with said pipo to heat,withdraw from the attemperating compartment, deliver and circulate theliquid pasteurizing medium. and a valved pipe of relativelyk smalldiameter leading from the attemperating compartment into said largerpipe.

4. A pasteurizing apparatus comprising a tank containingattemperating'and pastelli'- izing compartments and a coolingcompartment and equipped with an endless holdercarrying conveyer.orcarrying the product to be treated through said compartments, a pipeof relatively large diameter connecting the upper part of theattemperating compartment with the lower part of the pas-v teurizingcompartment, a thermostat-controlled steam-jet connected with said pipenear its lower end to heat, withdraw from the attemperatingcompartment,deliver and circulate the liquid pasteurizing medium, a

pipe of relatively-small diameter leading named compartments, an endlessholdercarrying conveyer for carrying the product to be treated throughsaid compartments, a valvedpipe connecting the cooling and pasteurizingcompartments, a pipe of relatively large diameter connecting theattemperating and pasteurizing compartments, a thermostat-controllingsteam-jet connected with said pipe to heat, withdraw from theattemperating compartment, deliver and circulate the liquid pasteurizingmedium, and a. pipe of relatively small diameter leading from theattemperating compartment into saidlarger pipe.

6. A Vpasteurizing apparatus'fcomprising a tank containing attemperatingand pasteurizing compartments' and a cooling compartment partitionedfrom said pasteurizing compartment to be normally out of circulatingcommunication with the two irstnamed compartments, an endlessholdercarrying conveyer for carrying the product to be treated throughsaid compartments, a valved pipe connecting the cooling and pasteurizingcompartments,pa pipe of relatively large diameter connecting theattemperating and pasteurizing compartments, a thermostat-controlledsteam-jet connected with said pipe to heat, withdraw from the y veyerfor carrying the productto be treated through said compartments. a pipeconnecting the inner leg of the attemperating conipartment with thelower part of the pasteurizing compartment, and a thermostatcontrolledsteam-jet connected with said pipe toward its lower end to heat,withdraw from the attemperating compartment, deliver to the pasteurizingcompartment and circulate the liquid pasteurizing medium.

8. A pasteurizing apparatus comprising a tank containing attemperatingand pasteurizing compartments and a cooling compartment, and equippedwith an endless holdercarrying conveyer for carrying the product to betreated through Asaid compartments, a pipe of relatively larger diameterextending outside the tank from the upper inner part of theattemperating compartment to the lower part of the pasteurizingcompartment and terminating in a transverse Section provided withdepending branches leading into said lower part, athermostat-controlling steam-jet connected with said pipe and transversesection to heat, withdraw from the attemperating compartment, deliver tothe pasteurizing compartment and circulate the liquid Ipasteurizingmedium, and a pipe of relatively small diameter leading from the lowerouter part of the attemperating compartment into said larger pipe abovethe junction therewith of the Steam-jet and provided in said larger pipewith a priming head.

f SIGMUND GOLDMAN In presence of- A. C. FISCHER, K. ONEILL.

